.middle > div {
    border: 1px solid gray;
}

.middle > div > div:nth-child(2) {
    padding: 10px;
}

.middle > div > div:nth-child(1) {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid gray;
}

.middle > div > div:nth-child(1) > div:nth-child(2) {
    display: flex;
    align-items: center;
}

.middle > div > div:nth-child(1) > div:nth-child(2) > div {
    padding: 0 30px;
    line-height: 61px;
    cursor: pointer;
}

.middle > div > div:nth-child(1) > div:nth-child(2) > div:hover {
    background-color: orange;
    color: white;
}

.list-content > div {
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
    line-height: 30px;
    border-bottom: 1px solid gray;
    align-items: center;
}

.list-content > div > div:nth-child(1) {
    display: flex;
}
/*-------------------分页-----------*/
.page{
    display: flex;
    justify-content: center;
}
.page>div{
    display: flex;
    line-height: 50px;

}
.page>div>div{
    margin: 20px;
    border: 1px solid gray;
    padding: 0 20px;
}
.page>div>div:nth-child(1){
    border: none;
}